Malcolm Eric Trudgen

Ochrosperma is a group of shrubs and small trees in the myrtle family Myrtaceae described as a genus in 1987. The genus is endemic to Australia. Species Ochrosperma adpressum A.R.Bean – Queensland Ochrosperma citriodorum (Penfold & J.L.Willis) Trudgen – New South Wales Ochrosperma lineare (C.T.White) Trudgen – Queensland, New South Wales Ochrosperma obovatum A.R.Bean – Queensland Ochrosperma oligomerum (Radlk.) A.R.Bean – New South Wales Ochrosperma sulcatum A.R.Bean - Northern Territory

Aluta is a genus of small shrubs in the family Myrtaceae. Species occur in Western Australia, South Australia and the Northern Territory. When the genus was erected in 2000, three species were transferred from the genus Thryptomene. Species include: Aluta appressa (C.R.P.Andrews) Rye & Trudgen Aluta aspera (E.Pritz.) Rye & Trudgen Aluta maisonneuvei (F.Muell. Rye & Trudgen) Aluta quadrata Rye & Trudgen Aluta teres Rye & Trudgen

Euryomyrtus ramosissima, the rosy baeckea, is a shrub in the myrtle family (Myrtaceae). The species is endemic to Australia. It is spreading in habit and grows to 60 cm in height. Its leaves are dark green, long and narrow ranging from 3 to 13 mm in length and 1 to 3 mm in width. White, pink or mauve flowers with circular petals are produced between June and February in its native range.

Euryomyrtus maidenii is a shrub endemic to Western Australia. The erect, compact or spreading shrub typically grows to a height of 0.1 to 0.9 metres (0.3 to 3.0 ft). It blooms between March and October producing purple-pink flowers. It is found on sand plains in the Wheatbelt, Mid West and Goldfields-Esperance regions of Western Australia where it grows in sandy soils over laterite.

Enekbatus is a genus of ten species of small to medium Western Australian shrubs in the family Myrtaceae, moved from Baeckea in 2010.

Astus is a genus of flowering plants belonging to the family Myrtaceae. Its native range is Southwest Australia. Species: Astus duomilia Trudgen & Rye Astus subroseus Trudgen & Rye Astus tetragonus (F.Muell. ex Benth.) Trudgen & Rye Astus wittweri Trudgen & Rye

Seorsus is a genus of flowering plants in the family Myrtaceae. The occurrence of the four species in Australia and Borneo is widely spaced, and is thought to be indicative that the genus predates the breakup of Gondwana. Species include: Seorsus aequatorius Rye & Trudgen - endemic to West Kalimantan in Borneo. Seorsus clavifolius (C.A.Gardner) Rye & Trudgen (syn. Astartea clavifolia) - endemic to the south-west of Western Australia Seorsus intratropicus (F.Muell.) Rye & Trudgen (syn. Baeckea intratropica) - endemic to the Northern Territory. Seorsus taxifolius (Merr.) Rye & Trudgen (syn.

Aluta maisonneuvei commonly known as desert heath myrtle, is a flowering plant in the family Myrtaceae. It is woody shrub with small leaves and pink to whitish flowers and grows in Western Australia, South Australia and the Northern Territory.

Thryptomene striata is a shrub species in the family Myrtaceae that is endemic to Western Australia. The erect and compact shrub typically grows to a height of 0.5 to 1 metre (2 to 3 ft). It blooms in September producing pink-purple flowers. It is found in the Mid West region of Western Australia between Geraldton and Northampton where it grows in sandy to loamy soils with ironstone.

Thryptomene salina is a shrub species in the family Myrtaceae that is endemic to Western Australia. The shrub is found in a small area the Wheatbelt region of Western Australia around Kondinin.

Thryptomene eremaea is a species of flowering plant in the family Myrtaceae and is endemic to Western Australia. It is an erect shrub with upward-pointing, oval leaves and white or pale pink flowers with five petals and ten irregularly arranged stamens.

Thryptomene duplicata is a species of flowering plant in the family Myrtaceae and is endemic to Western Australia. It is a spreading shrub with upward pointing, egg-shaped leaves with the narrower end towards the base, and white flowers with five petals and about fifteen stamens in two whorls.

Thryptomene costata is a species of flowering plant in the family Myrtaceae and is endemic to Western Australia. It is an erect shrub with upward pointing, egg-shaped leaves with the narrower end towards the base, and white or pink flowers with five petals and ten stamens.

Rinzia sessilis is a plant species of the family Myrtaceae endemic to Western Australia. The spreading shrub typically grows to a height of 0.25 to 0.8 metres (0.8 to 2.6 ft). It blooms in September producing pink-white flowers. It is found on undulating flats and low ridges in the southern Wheatbelt and Goldfields-Esperance regions of Western Australia where it grows in sandy-clay or loamy soils with gravel.

Rinzia schollerifolia, commonly known as the Cranberry rinzia, is a plant species of the family Myrtaceae endemic to Western Australia. The spreading to procumbent shrub typically grows to a height of 0.05 to 0.2 metres (0.2 to 0.7 ft) and a width of 0.6 metres (2 ft). It blooms from August to October producing white-pink flowers. It is found on slopes along the south coast of the Great Southern region of Western Australia centred around Albany where it grows in sandy soils over granite or laterite. The species was originally formally described as Baeckea scholleraefolia by the botanist

Rinzia rubra is a plant species of the family Myrtaceae endemic to Western Australia. The spreading shrub typically grows to a height of 0.25 to 0.7 metres (0.8 to 2.3 ft) and a width of 1 metre (3 ft). It blooms from August to November producing white flowers. It is found in a small area on undulating plains in the Goldfields-Esperance region of Western Australia just north of Esperance where it grows in sandy soils.

Rinzia dimorphandra, commonly known as the Esperance rinzia, is a plant species of the family Myrtaceae endemic to Western Australia. The rounded shrub typically grows to a height of 0.25 metres (0.8 ft). It blooms in October producing white-pink flowers. It is found along the south coast in the Goldfields-Esperance region of Western Australia centred around the town of Esperance where it grows in sandy soils.

Rinzia communis is a plant species of the family Myrtaceae endemic to Western Australia. The spreading and straggly shrub typically grows to a height of 0.3 metres (1.0 ft). It blooms between July and September producing white-pink flowers. It is found on hills in the southern Wheatbelt, Great Southern and Goldfields-Esperance regions of Western Australia where it grows in sandy to loamy soils over laterite, granite or limestone.

Rinzia carnosa, commonly known as the fleshy leaved rinzia, is a plant species of the family Myrtaceae endemic to Western Australia. The woody sub-shrub typically grows to a height of 0.7 to 1.3 metres (2.3 to 4.3 ft). It has many branches with long slim branchlets. The thick, appressed and pitted leaves have a elliptic to sub-orbicular shape with a length of 0.5 to 2.5 millimetres (0.020 to 0.098 in) and a width of 0.5 to 1 mm (0.020 to 0.039 in). It blooms in September producing white-pink flowers. The flowers are 5 to 7 mm (0.197 to 0.276 in) in diameter with five petals and occur in

Rinzia affinis is a plant species of the family Myrtaceae endemic to Western Australia. The rounded or erect shrub typically grows to a height of 0.2 to 0.7 metres (0.7 to 2.3 ft). It blooms between July and November producing white-pink flowers. It is found on hills in the southern Wheatbelt and the Great Southern region of Western Australia between Corrigin and Jerramungup where it grows in sandy soils over laterite.

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Euryomyrtus recurva is a shrub endemic to Western Australia. The shrub typically grows to a height of 0.3 to 1 metre (1.0 to 3.3 ft). It blooms between July and September producing white-pink flowers. It is found on catchment slopes and in gravel pits in the Wheatbelt, Mid West and Goldfields-Esperance regions of Western Australia where it grows in sandy-clay soils.

Euryomyrtus patrickiae is a shrub endemic to Western Australia. The low rounded shrub typically grows to a height of 0.3 metres (1.0 ft). It is found on rises in the Mid West and Goldfields-Esperance regions of Western Australia where it grows in stony loam and sandy soils.

Euryomyrtus inflata is a shrub endemic to Western Australia. The shrub typically grows to a height of 0.3 to 0.7 metres (1.0 to 2.3 ft) and has dull green leaves. It blooms between June and July producing white-pink flowers followed by erect fruits. It is found on flat plains in the Mid West region of Western Australia between Sandstone, Meekatharra and Wiluna where it grows in deep red sandy soils.

Enekbatus sessilis is a shrub endemic to Western Australia. The bushy shrub typically grows to a height of 0.3 to 0.7 metres (1 to 2 ft). It blooms between August and September producing white-pink-purple flowers. It is found on sand plains and flats in the Mid West and Wheatbelt regions of Western Australia between Northampton and Dalwallinu where it grows in sandy-loamy-clay soils containing gravel over laterite or sandstone.

Enekbatus cryptandroides is a shrub endemic to Western Australia. The dense shrub typically grows to a height of 0.7 metres (2 ft) and blooms between September and October, producing pink-white flowers. The species shares features with Enekbatus clavifolius, both of which have ten stamens that are oppositely arranged to the sepals and petals. They also have tuberculate and usually often fruit containing many smooth seeds partly covered by an adherent scurfy layer. It is found in the Mid West and Goldfields regions of Western Australia between Wiluna and east of Kalgoorlie where it grows in

Tetragonia coronata is a member of the genus Tetragonia and is endemic to Australia. The annual herb has a decumbent habit. It blooms in July producing yellow flowers. Often found among calcrete outcrops it has a scattered distribution throughout the Gascoyne region of Western Australia where it grows in clay loam soils.

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Enekbatus stowardii is a shrub endemic to Western Australia. The low shrub typically grows to a height of 0.5 to 1.0 metre (2 to 3 ft). It blooms between July and October producing pink-red flowers. It is found on plains, hillsides, road verges and flats in the Mid West and Wheatbelt regions of Western Australia between Morawa and Yalgoo where it grows in sandy-loamy-clay soils often containing rocky gravel over granite . It was initially formally described as Baeckea stowardii by the botanist Spencer Le Marchant Moore in 1920 as part of the work A contribution to the Flora of Australia.

Enekbatus planifolius is a shrub endemic to Western Australia. The spreading shrub typically grows to a height of 1.1 metres (4 ft). It blooms between September and October producing pink flowers. It is found on gentle slopes in the Mid West region of Western Australia around Morawa where it grows in sandy-silty soils.